How do you right the equation that a month picked at random has 7/12 percentage will have 31 days=

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

I'm so close to finishing all these.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu